After canvassing this paragraph on Yahoo! Shine, I can only conclude that the writer has no idea where to put a hyphen:
She also doesn’t realize that canvas and canvass are homophones with very different meanings. Canvas is a heavy, coarse cloth; canvass (with an additional S) means to examine carefully or to conduct a poll or survey.
October 25, 2010 at 10:00 am
[...] Covering the sidewalks with canvas and other stupid mistakes … [...]
October 11, 2011 at 12:05 pm
Thanks for this information. I never knew there was a canvas and a canvass. I’ve been spelling it as canvas for years when I really meant the one with two S’s.